Results 291 to 300 of about 106,751 (354)

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

The Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Topological and variational modularity: A case study using the pectoral girdle across the Chrosomus eos‐neogaeus hybridization complex

The Anatomical Record, EarlyView.
Abstract Modularity and integration are key developmental properties and have remained central in evo‐devo research because of how they relate to evolvability. While modularity and integration have commonly been assessed with landmark‐based geometric morphometrics (GMM), other methods such as anatomical network analysis (AnNA) are increasingly being ...
Kevin K. Duclos, Thomas Grünbaum, Bernard Angers, Richard Cloutier, Heather A. Jamniczky   +4 more
wiley   +1 more source

An overview of the postcranial osteology of caecilians (Gymnophiona, Lissamphibia)

The Anatomical Record, EarlyView.
Abstract Caecilians comprise a relatively small (~220 species) group (Gymnophiona) of snake‐like or worm‐like, mostly tropical amphibians. Most adult caecilians are fossorial, although some species may live in aquatic or semi‐aquatic environments, either as larvae or adults.
Rodolfo Otávio Santos, Mark Wilkinson, Hussam Zaher   +2 more
wiley   +1 more source

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

The Anatomical Record, EarlyView.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman, Rodrigo Tinoco Figueroa, Robert R. Higgins, Stephanie E. Pierce, Michael I. Coates, Emily M. Troyer, Vincent Fernandez, Kathleen Dollman, Jing Lu, Min Zhu, Matt Friedman, Sam Giles   +11 more
wiley   +1 more source

A proximodistal gradient in bone structure and mechanics in the wings of Seba's short‐tailed bat, Carollia perspicillata

The Anatomical Record, EarlyView.
Abstract Bats possess the remarkable ability to fly, and with this, distinctive wing bone properties. We investigated the structural, mechanical, and compositional properties of the humerus, radius, metacarpals, and proximal and middle phalanges of Carollia perspicillata, an approximately 15 g fruit‐eating bat native to the Neotropics.
Xiaoxiang Ma, Aowen Deng, Sabah Nobakhti, Sharon Swartz, Sandra J. Shefelbine   +4 more
wiley   +1 more source

Dr. Hans Kohn and the political takeover of the Berlin Medical Society by the National Socialist regime in 1933

The Anatomical Record, EarlyView.
Abstract To solidify their power over society, totalitarian regimes will usually eliminate any dissent, any perceived threats early on. These threats include not only political enemies but also educated and independent segments of society, such as professional associations.
Michael Hortsch
wiley   +1 more source

Histovariability and fossil diagenesis of Pissarrachampsa (Pseudosuchia, Notosuchia, Baurusuchidae) from the Upper Cretaceous of Southeast Brazil

The Anatomical Record, EarlyView.
Abstract Notosuchians were key components of western Gondwanan Cretaceous ecosystems in terrestrial predator niches and exhibited remarkable taxonomic and ecological diversity. Previous research has explored their physiology, metabolism, and histology, revealing varied growth patterns and life history strategies.
Tito Aureliano, Virgínia Maciel, Pedro Victor Buck, Felipe C. Montefeltro, Thiago da S. Marinho, Aline M. Ghilardi   +5 more
wiley   +1 more source

Propagation of preexisting dentinal microcracks after root canal preparation using rotary, reciprocating, and adaptive instruments: An ex vivo microcomputed tomographic analysis

Arunima Aggarwal, Ruchika Roongta Nawal, Sudha Yadav, Sangeeta Talwar, Sriram Kunnoth, Puneet Mahajan   +5 more
openalex   +1 more source

Preparation techniques in root canal therapy

, 1990
openaire   +1 more source

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The effect of root canal preparation on the shape of the curved root canal

International Endodontic Journal, 1985
Summary. This study reports the effect of the step‐bad enlargement technique of root canal preparation on the shape of the curved root canal of extracted human teeth. This was achieved by superimposing tracings made from photographic prints obtained by radiographs of teeth before canal preparation, after apical preparation and after coronal flaring ...
J. Webber, K. C. Lim
openaire   +3 more sources